This topic has been much discussed, and as you will soon see there are different several paths to digitizing photos, each with it's own loyal adherents. A brief overview of your options:
1. Paper prints.
I believe a flatbed scanner is the best way to copy paper prints. You could try to photograph them with a digital camera and lights, but it is hard to control reflections.
2. 35mm slides and negatives.
These can be digitized at home with flatbed scanners that have lights in the lids, dedicated film scanners, by copying with a digital camera, or, for best quality (at high cost), you can pay someone to scan them with a drum scanner.
I've never used a flatbed scanner for film, but from what I read, the quality from 135 film may tend more toward "fair" and not so much "great"?
Dedicated film scanners can do a great job, but there are few (if any) new film scanners being made. The legendary film scanners from back in the day are no longer supported by the manufacturers, so any needed parts or repairs are getting iffy. Furthermore, the legacy scanners often will not connect to and communicate with modern computers, so a certain amount of tech savy is often required to make them work.
Copying 35mm with a digital camera can give great results -- or not -- depending on your setup. Cost can vary considerably. There are few (if any?) complete off-the-shelf options, so it can be challenging to find all the necessary pieces to put together a setup you like. [here is a photo of mine:
https://garywright.smugmug.com/Photography/Film-To-Digital/i-4TgHjfm/A].
All of these options require software to convert negatives to positives. Black and white is relatively easy, using any competent image editing software. Color negatives, however, can be more difficult. Often times, the software that comes with flatbed scanners or film scanners will do a pretty good job with color, but remember, the software that came with legacy film scanners may not run on a modern computer. Those using digital cameras to scan color negatives, will probably have the most trouble finding a path to good looking color inversions.
3. 120 film
More-or-less the same as 35mm, except: scans of 120 negatives done on flatbed scanners tend to be more satisfying than from 135 film. And decated film scanners that can handle 120 film are even more rare (and expensive) than those for 135 film.
Especially if you don't want to spend a lot of time on a one-and-done project, I would seriously consider paying someone to do it for you.
Edited to add: We still don't know what you plan to do with the digital images, so we don't know how much resolution / image quality you require. If you just want something for online sharing, the IQ bar can be fairly low, but if you are planning on making prints, the scans should probably be of higher resolution.